Steve,

>
> 4301 contains We have explicit directions on how to use multiple SAs when
> the peers know that they want to send traffic with different QoS parameters.
> This appears to be an instance where the middle boxes are to examining
> traffic, and putting in into different QoS queues. That raises the question

You got it all wrong. The sender is sending packets with the same QoS
parameters; its the receiver thats trying to prioritize some packets
over the others. One would typically do this for the Hellos/KeepAlives
that are associated with a protocol, so that the  adjacency/peering
session are not timed out.

Jack
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